Emerson Fisher 4320 Manual de instrucciones descargar pdf (Pagina 27)

Instruction Manual

D103621X012

4320 Position Monitor

April 2014

Figure 19. Update Rate Impact on Power Module

Life; On/Off Control and Monitoring

POWER MODULE LIFE (YEARS)

UPDATE RATE (SECONDS)

STANDARD

EXTENDED

NOTE: THREE SUB-DEVICES ARE ASSUMED,

CONSTANT TEMPERATURE OF 22_C (72_F).

110

10000

100 1000

Figure 20. Number of Sub-Devices Impact on Power

Module Life; Monitoring

POWER MODULE LIFE (YEARS)

NUMBER OF SUB-DEVICES

STANDARD

EXTENDED

10 15

NOTE: 60 SECOND UPDATE RATE, CONSTANT

TEMPERATURE OF 22_C (72_F).

Figure 21. Temperature Effects on Power Module

Life; On/Off Control and Monitoring

POWER MODULE LIFE (YEARS)

TEMPERATURE (_C)

NOTE: THREE SUB-DEVICES ARE

ASSUMED WITH 60 SECOND UPDATE RATE.

ON/OFF CONTROL; 100 ACTUATIONS PER DAY.

STANDARD

EXTENDED

-40 -15 10 35 60

STANDARD

EXTENDED

MONITORING

ON/OFF CONTROL

Figure 22. Effect of Actuations on Power Module Life;

On/Off Control

NUMBER OF ACTUATIONS PER DAY

POWER MODULE LIFE (YEARS)

NOTE: THREE SUB-DEVICES ARE ASSUMED,

60 SECOND UPDATE RATE, CONSTANT

TEMPERATURE OF 22_C (72_F).

STANDARD

EXTENDED

1 10 100 1000

10000

Continuous updates is the default communication method for the selected device variable; the device sends the data

to the gateway at every update period, whether the data has changed or not. However, the 4320 can also be

configured to allow position feedback sampling at faster than the default update rate and to send data only when the

measured variable has changed. This is useful in certain applications; for example, when used with relief valve

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Emerson Fisher 4320 Manual de instrucciones Pagina 27

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